Preview content as Student is missing in New Learner Experience

Hello team,

My designer found that the button of "Preview content as Student" is missing if I click the "gear" icon on the left menu after turning on the NLE (screens attached).

NLE is ON:

NLE On.png

NLE is OFF: NLE Off.png The permission remain the same and I'm wondering is this button hidden or move to another place now in NLE?

Thanks